Entropy and Chain Flexibility

FIGURE 10-46 Schematic diagram depicting flexible and stiff chains. 

For a stiff chain, one that does not have much freedom to rotate around its backbone bonds, the opposite will be true and- 

FIGURE 10-47 Schematic diagram depicting the enthalpy of fusion for a flexible chain. 

FIGURE 10-49 Approximate melting temperatures of PE, polyethylene oxide) and polyQ -xylene). 

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